87204940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{569}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 187689600

約数和(自身を除く): 100484660

約数列:

[1, 2, 4, 5, 10, 20, 79, 97, 158, 194, 316, 388, 395, 485, 569, 790, 970, 1138, 1580, 1940, 2276, 2845, 5690, 7663, 11380, 15326, 30652, 38315, 44951, 55193, 76630, 89902, 110386, 153260, 179804, 220772, 224755, 275965, 449510, 551930, 899020, 1103860, 4360247, 8720494, 17440988, 21801235, 43602470, 87204940]

約数ペア:

[(1, 87204940), (2, 43602470), (4, 21801235), (5, 17440988), (10, 8720494), (20, 4360247), (79, 1103860), (97, 899020), (158, 551930), (194, 449510), (316, 275965), (388, 224755), (395, 220772), (485, 179804), (569, 153260), (790, 110386), (970, 89902), (1138, 76630), (1580, 55193), (1940, 44951), (2276, 38315), (2845, 30652), (5690, 15326), (7663, 11380)]